As the historic organized crime crackdown known as “Case 512” continues, police announced on Monday that reputed gangster Nissim Alperon was arrested on Sunday at Ben-Gurion International Airport before attempting to flee the country.

While details of the arrest, and ongoing investigation, remain unclear due to a court-imposed gag order, according to police, Alperson is a suspect in a 2002 murder in Prague that precipitated numerous gang-related murders throughout Israel.

Another reputed crime boss was also arrested Monday, although information has been classified, bringing the arrest total to 57.